公开(公告)号：US20220244615A1

公开(公告)日：2022-08-04

申请号：US17528628

申请日：2021-11-17

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Korea Advanced Institute of Science and Technology

Inventor： Chan-Hee Kang ,  Hyun-Woo Rhee ,  Hyeon-Ho Yoon ,  Nam-Hyun Kwon ,  Hyo-Hoon Park ,  Geum-Bong Kang

IPC: G02F1/295

Abstract: An optical phased array (OPA) radiator includes a plurality of unit radiators configured to serve as optical waveguides, each of the unit radiators being made of a silicon material and each having a predetermined length, where the unit radiators are disposed in parallel; a cladding portion configured to cover the plurality of unit radiators; and a plurality of electrodes arranged in parallel with the plurality of unit radiators on the cladding portion, where the plurality of electrodes are arranged so as not to overlap the plurality of unit radiators in a vertical direction. A beam radiated through the unit radiators using a phased array can be efficiently vertically steered.

公开(公告)号：US20240027868A1

公开(公告)日：2024-01-25

申请号：US18373482

申请日：2023-09-27

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Korea Advanced Institute of Science and Technology

Inventor： Chan-Hee Kang ,  Hyun-Woo Rhee ,  Hyeon-Ho Yoon ,  Nam-Hyun Kwon ,  Hyo-Hoon Park ,  Geum-Bong Kang

IPC: G02F1/295

CPC classification number: G02F1/2955

Abstract: An optical phased array (OPA) radiator includes a plurality of unit radiators configured to serve as optical waveguides, each of the unit radiators being made of a silicon material and each having a predetermined length, where the unit radiators are disposed in parallel; a cladding portion configured to cover the plurality of unit radiators; and a plurality of electrodes arranged in parallel with the plurality of unit radiators on the cladding portion, where the plurality of electrodes are arranged so as not to overlap the plurality of unit radiators in a vertical direction. A beam radiated through the unit radiators using a phased array can be efficiently vertically steered.

公开(公告)号：US12147143B2

公开(公告)日：2024-11-19

申请号：US18373482

申请日：2023-09-27

Applicant: Hyundai Motor Company ,  Kia Corporation ,  Korea Advanced Institute of Science and Technology

Inventor： Chan-Hee Kang ,  Hyun-Woo Rhee ,  Hyeon-Ho Yoon ,  Nam-Hyun Kwon ,  Hyo-Hoon Park ,  Geum-Bong Kang

IPC: G02F1/295

Abstract: An optical phased array (OPA) radiator includes a plurality of unit radiators configured to serve as optical waveguides, each of the unit radiators being made of a silicon material and each having a predetermined length, where the unit radiators are disposed in parallel; a cladding portion configured to cover the plurality of unit radiators; and a plurality of electrodes arranged in parallel with the plurality of unit radiators on the cladding portion, where the plurality of electrodes are arranged so as not to overlap the plurality of unit radiators in a vertical direction. A beam radiated through the unit radiators using a phased array can be efficiently vertically steered.

公开(公告)号：US11609330B2

公开(公告)日：2023-03-21

申请号：US16839277

申请日：2020-04-03

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Hyo-Hoon Park ,  Hyeonho Yoon ,  Nam-Hyun Kwon ,  Kyeongjin Han ,  Hyun-Woo Rhee ,  Geum-Bong Kang

IPC: G01S7/481 ,  G01S17/32 ,  G01S7/4913

Abstract: A silicon phased array based LiDAR device that measures a distance using a quasi-frequency modulation is disclosed. A LiDAR device according to an exemplary embodiment of the inventive concept includes a light source that generates an optical signal, an optical modulator that generates a first optical signal having a quasi-frequency whose a modulation frequency constantly varies with time by modulating a light intensity of the optical signal, an optical splitter that splits optical power of the first optical signal into a reference optical signal and a transmit (Tx) optical signal, an optical transmitter that receives and emits the Tx optical signal toward an object, an optical receiver that receives a receive (Rx) optical signal reflected from the object and transfers the Rx optical signal, an optical coupler that mixes the reference optical signal and the Rx optical signal, a balanced photodetector that detects an intermediate frequency from the optical signal transferred from the optical coupler and a distance calculator that obtains distance information by measuring the intermediate frequency.

公开(公告)号：US20210278537A1

公开(公告)日：2021-09-09

申请号：US16899959

申请日：2020-06-12

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION ,  KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chan-Hee Kang ,  Kyeong-Jin Han ,  Geum-Bong Kang ,  Hyo-Hoon Park ,  Seong-Hwan Kim

IPC: G01S17/34 ,  G01S7/481 ,  G01S7/4915

Abstract: A laser transmitting and receiving module for a light detection and ranging (LiDAR) may include a laser light source; a transmission optical phased array (OPA) device configured to emit laser light from the laser light source into a two-dimensional (2D) area; a reception OPA device configured to receive reflected laser light after being emitted by the transmission OPA device; a mixer configured to mix the laser light with the reflected laser light received by the reception OPA device; and a photo detector configured to detect an optical signal mixed by the mixer.